Tracking number shortcode not working

Hello,

I just started to work with a logistic company who integrates the tracking number in my orders.
I want to display these info in my ‘completed’ emails.

I use WooCommerce Shipment Tracking for the info.

I tried two options:
a) wc hook => it shows the info, but I can’t customize them. How to do it? I need them at least in French, not in English. Maybe not all the info, nor in a table.

b) short code as Tracking Number: [wec_order_meta key=”_wc_shipment_tracking_items” array_key=”tracking_number”] in a normal text element => the array doesn’t seem to work. It gives me all the info:
[{“tracking_provider”:””,”custom_tracking_provider”:”COLISSIMO”,”custom_tracking_link”:”https:\/\/www.laposte.fr\/outils\/suivre-vos-envois?code=6A36369458435″,”tracking_number”:”6A36369458435″,”date_shipped”:1714496786,”tracking_id”:”0f05a09687ab503745beee5f6cd3ea81″}]

Could you help me please?
Thank you very much.